Hi,
I have a 1978 Marlin Venus, Tri Hull with a 140 Mercruiser I/O. I have run both a 15 X 17 and a 15 X 19 alum prop on this boat. I want to upgrade to stainles, is there any performance change from alum to SS?
17P, great hole shot for skiing, 33/34 mph, 5600 rpm
19P, decent hole shot, 36/37...
